Saint-Gobain NorPro cross partition rings are available in proware material. When using 6 in.(150mm) rings as a secondary support, a second layer of 4-in.(100mm) rings is necessary to retain 2-in.(50mm) saddles. [See More]

MACOR machinable glass ceramic has excellent physical properties, high dielectric strength, and electrical resistivity; and it withstands high temperature while providing tight tolerance capability. It is non-porous and non-shrinking, and can be machined into complicated shapes and precision parts... [See More]